IPAD 4 with IOS10.3.3: How to block a text message originator? Receiving text a messages from three people and one of them is unknown

HI stoneyjb, thank you for posting in Apple Support Communities.

The following link explains how to block, filter and report messages on an iPad which you may find useful.

https://support.apple.com/en-au/guide/ipad/ipad80626130/ipados

You can also contact Apple Support if the issue is not resolved as follows:

• Online:--> Genius Bar Reservation and Apple Support Options - Apple;
• Contacting a local Apple Store or AASP among the list provided above but also again as follows Apple – Location Selector; or
• Using the "Apple Support" app, available and downloadable from App Store.